ISO7241CDWG4

Overview

The ISO7241CDWG4 is a quad-channel digital isolator from the ISO7241C series, manufactured by Texas Instruments. It utilizes capacitive coupling technology to provide electrical isolation between circuits. The device features a 3:1 channel configuration with three forward and one reverse unidirectional path. It operates within a supply voltage range of 2.8 V to 5 V and supports data rates up to 25 Mb/s. Key electrical specifications include an insulation voltage of 2500 Vrms, a maximum propagation delay of 15 ns, and a common-mode transient immunity of 25 kV/µs. The component is housed in a 16-pin SOIC package and is rated for operation between -40°C and +125°C.

Feature Summary

• Provides robust galvanic isolation using high-speed capacitive coupling technology.
• Features a flexible 3:1 channel architecture supporting unidirectional signal transmission.
• Ensures reliable system operation in rugged environments with high common-mode transient immunity.
• Offers low power consumption suitable for battery-operated applications.

Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing patient isolation barriers
• Power metering and energy management systems
• Automotive electronics with high-voltage isolation requirements

Procurement Notes

Verify the specific suffix 'G4' against current manufacturer documentation, as this indicates RoHS compliance and may reflect legacy status. Confirm availability through authorized distributors, as some variants in this family are marked obsolete or have limited stock. Ensure the selected package matches the PCB footprint requirements for the 16-SOIC form factor. Cross-reference datasheet revisions to confirm pinout and electrical characteristics remain consistent with design specifications.

Selection Notes

Select this component when a quad-channel isolator with a 3:1 split is required for unidirectional data transfer. It is suitable for applications demanding 2500 Vrms isolation strength and data rates up to 25 Mbps. Consider the operating temperature range and supply voltage compatibility with the target system logic levels. Evaluate the trade-off between the lower propagation delay compared to higher-speed variants and the cost-effectiveness for general-purpose isolation needs.

Part Context

This part belongs to the ISO7241C family of digital isolators, which are designed to replace traditional optocouplers in many applications. The family offers improved performance in terms of speed, power consumption, and size. The ISO7241CDWG4 specifically represents the lead-free, RoHS-compliant version of the ISO7241CDW device. It shares functional similarities with other members of the ISO724x series but differs in channel configuration and speed capabilities.

Replacement Considerations

The ISO7241CDWR is listed as a recommended substitute for the ISO7241CDWG4. Verify that the non-G4 suffix meets all environmental and regulatory requirements for the intended application. Check for any differences in packaging or moisture sensitivity levels between the two variants before finalizing the replacement decision.